江西建材Issue(10)：288-292,5.
浅埋大断面高速公路隧道下穿国道稳定性分析
Stability Analysis of Shallow Buried Large Section Expressway Tunnel Under National Highway
廖家荣 1王凯 1张奎涛 1陈怿旸1
作者信息
- 1. 江西省交通设计研究院有限责任公司,江西 南昌 330052
- 折叠
摘要
Abstract
Based on Xifeng Tunnel,a three-dimensional finite element model was established to quantify the surrounding rock stability of the shallow tunnel with large section under different buried depths and without vehicles,and the dynamic decay rule and dynamic response under different axle loads were studied.The research results show that the vertical displacement of the tunnel surrounding rock presents an"inverted bimodal"curve under different burial depths,and the vertical displacement reaches its maximum value at 2 m from the arch top.With the in-creasing of burial depth,the bimodal shape is gradually obvious,and the vertical displacement of the tunnel surrounding rock continues to in-crease.Under the action of vehicle load,the dynamic noise of rock mass in tunnel decreases continuously in the vertical direction.The sur-rounding rock of the tunnel is most affected by vehicle load at the arch of the guide tunnel on both sides,where the dynamic response of vehicle load is the largest,and the vertical displacement of the surrounding rock of the tunnel increases with the increase of vehicle axle load.关键词
下穿公路/隧道/车辆荷载/稳定性分析Key words
Underpass the highway/Tunnels/Vehicle load/Stability analysis分类
交通工程引用本文复制引用
廖家荣,王凯,张奎涛,陈怿旸..浅埋大断面高速公路隧道下穿国道稳定性分析[J].江西建材,2024,(10):288-292,5.
